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Scavenged Pre-Chamber Volume Effect on Gas Engine Performance and Emissions

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F19%3A00332253" target="_blank" >RIV/68407700:21220/19:00332253 - isvavai.cz</a>

  • Result on the web

    <a href="https://saemobilus.sae.org/content/2019-01-0258/" target="_blank" >https://saemobilus.sae.org/content/2019-01-0258/</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.4271/2019-01-0258" target="_blank" >10.4271/2019-01-0258</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Scavenged Pre-Chamber Volume Effect on Gas Engine Performance and Emissions

  • Original language description

    This work presents development and results of experimental and numerical investigations of an advanced ignition system with a scavenged pre-chamber for a natural gas fueled engine with a bore of 102 mm and stroke of 120 mm. Two combustion concepts are taken into account. The lean burn concept is used to minimize engine out emissions of nitric oxides (NOx) and to achieve high thermal efficiency at low load. The in-house designed scavenged pre-chamber enables the engine to be operated up to the air-excess ratio (lambda) of 2. A stoichiometric (lambda=1) operation is also possible. It is compatible with a three-way catalyst concept, at high load and potentially transient modes and can provide as high as possible engine power density. The influence of the scavenged pre-chamber volume on the combustion and performance within the range of the operational points of the naturally aspirated engine is presented in this paper. The two pre-chambers with different volume (2.2 % and 4.6 % of compression volume) were tested at steady state conditions. Experimental work was complemented with CFD simulations for detailed explanation of the physics inside the main combustion chamber and in the pre-chamber. The 3-D CFD model of the experimental engine was built in AVL Fire software. The size of the pre-chamber was tested as well to verify CFD mode performance versus experimental data. Both mentioned configurations were tested numerically using multi-cycle LES calculations. These results are analyzed in terms of mixture homogeneity, rate-of-heat-release and cycle-to-cycle variability.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    20301 - Mechanical engineering

Result continuities

  • Project

    <a href="/en/project/LO1311" target="_blank" >LO1311: Development of Vehicle Centre of Sustainable Mobility</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2019

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    WCX SAE World Congress Experience

  • ISBN

  • ISSN

    0148-7191

  • e-ISSN

    0148-7191

  • Number of pages

    17

  • Pages from-to

    1-17

  • Publisher name

    SAE International

  • Place of publication

    Warrendale, PA

  • Event location

    Detroit

  • Event date

    Apr 9, 2019

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article